mail.ybcoach.com - robtex.com

mail.ybcoach.com

CNAMEybcoach.sakura.ne.jp
DNSSEC⚠️ Not signed
A49.212.198.201🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww2961.sakura.ne.jp
NSmaster.dns.ne.jp ⭐
A210.224.172.18🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRmaster.dns.ne.jp
NSns1.dns.ne.jp ⚠️ Not in parent delegation
A61.211.236.1🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
NSns2.dns.ne.jp ⚠️ Not in parent delegation
A133.167.21.1🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan
PTRns2.dns.ne.jp
MXybcoach.sakura.ne.jp ⭐
A49.212.198.201🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww2961.sakura.ne.jp
TXTv=spf1 a:www2961.sakura.ne.jp mx ~all
SOAmaster.dns.ne.jptech@sakura.ad.jp 2024-12-04 #11

ybcoach.com

DNSSEC⚠️ Not signed
A49.212.198.201🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
NSns1.value-domain.com ⭐
NSns2.value-domain.com
NSns3.value-domain.com ⚠️ Not in zone NS records
NSns4.value-domain.com ⚠️ Not in zone NS records
NSns5.value-domain.com ⚠️ Not in zone NS records
MXybcoach.sakura.ne.jp ⭐
TXTv=spf1 a:www2961.sakura.ne.jp mx ~all
SOAns1.value-domain.comhostmaster@ybcoach.com 2024-12-05 #16
WOT: SAFE (61/100)

Previously MX for

ybcoach.com

Same first word

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A219.109.143.100CNAMEybcoach.sakura.ne.jp
○A219.109.143.1002015-06-29 → 2016-06-22 · 4 obs
● 2015-06-29 07:52:44
● 2016-06-22 20:42:38
○ 2026-06-09 21:44:26
○ 2026-07-26 02:04:22
●CNAMEybcoach.sakura.ne.jp2026-06-09 → 2026-07-26 · 2 obs
● 2026-06-09 21:44:26
● 2026-07-26 02:04:22

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comc.gtld-servers.net, m.gtld-servers.net, g.gtld-servers.net, i.gtld-servers.net...-
ybcoach.comns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com...5 records

✅ Authoritative Response

Server:172.64.52.38

NS records: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com, ns5.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ybcoach.com (unsigned zone)

⏱️ Timing

Total: 782ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1ybcoach.sakura.ne.jp

📌 Glue Records Collected

Total: 5

Out-of-bailiwick: 5 (ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com...)

Analysis

IP Addresses

mail.ybcoach.com directs to one IP number, which is 49.212.198.201.

Among the host names that share IP numbers with mail.ybcoach.com are windvane.co.jp, auc-warranty.com, kobayashi-pro.com and two others.

Name Servers

The authoritative name servers for mail.ybcoach.com are master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp — three in total.

The name servers of mail.ybcoach.com overlap at least partially with those of other domains — among them chofu-fm.com, foodallergy.jp, mikkun.com and two more.

The hostnames master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp each resolve to a single IP: master.dns.ne.jp → 210.224.172.18, ns1.dns.ne.jp → 61.211.236.1, ns2.dns.ne.jp → 133.167.21.1.

Mail Servers

mail.ybcoach.com routes its mail through a single mail server, ybcoach.sakura.ne.jp.

The MX records for mail.ybcoach.com match those of other domains — including ybcoach.sakura.ne.jp and ybcoach.com.

ybcoach.sakura.ne.jp directs to just one IP number, 49.212.198.201.